Try rock painting! My kids both loved it. You need: any smooth rock you collect, acrylic paints from Walmart (they usually come in sets with little pots of different colors), some paintbrushes, craft glue, googly eyes, and clear spray gloss in a can (we used matte, but glossy works as well). Also glitter if you want.
Wash the rocks and dry well. Paint a background color and let dry (usually an hour). Paint designs or whatever on the rock and let dry. Spray with clear spray paint. When dry, glue on googly eyes if you want. Do this on a plastic tablecloth, NOT just the picnic table.
We made ladybugs, frogs, bees, spiders, etc. Larger rocks can be paperweighs or even door stops.
